If you’ve got an old laptop lying around, you may be looking at ways to repurpose those old laptop parts. Most laptop components are tricky to repurpose, but the laptop’s lithium-ion battery can easily be used for a DIY project. You may also have some spare laptop batteries lying around if you’ve replaced your laptop’s battery once it gets old. While an old, used battery may no longer be enough to power your laptop for a usable amount of time, it probably has enough life left to power something a bit smaller.